Mr. Kurosaki's single-minded love just won't stop.

The sixth volume of the "Billion Yen Proposal" is now available! When you graduate from high school, will you come and live with me? If I could spend every morning and night with you... Koharu receives a "second" proposal from Mr. Kurosaki. I'll marry you when we graduate..." Koharu says, "I'll marry you when we graduate... She stays put and freezes! Please let me think about my career path first! On the other hand, the black-hearted younger brother Tadao is finally serious about Koharu...?

The sixth volume of the "Billion Yen Proposal" is now available! When you graduate from high school, will you come and live with me? If I could spend every morning and night with you... Koharu receives a "second" proposal from Mr. Kurosaki. I'll marry you when we graduate..." Koharu says, "I'll marry you when we graduate... She stays put and freezes! Please let me think about my career path first! On the other hand, the black-hearted younger brother Tadao is finally serious about Koharu...?